A perineal cystic hamartoma causing constipation in an intact female Irish water spaniel

A perineal fluid-filled structure was discovered in a 6-year-old intact female Irish water spaniel suffering from intermittent constipation. Diagnostic tests revealed the structure was immediately caudal to the vagina and compatible with a cyst. Surgical excision was required for resolution of clini...

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Bibliographic Details
Published inCanadian veterinary journal Vol. 60; no. 11; pp. 1166 - 1170
Main Authors Alvarez-Sanchez, Alejandro, Charnock, Lauren, Hanna, Paul, Dundas, James
Format Journal Article
LanguageEnglish
Published Canada Canadian Veterinary Medical Association 01.11.2019
Subjects
Animals
Constipation - veterinary
Cysts - veterinary
Dog Diseases
Dogs
Female
Hamartoma - veterinary
Humans
Neoplasm Recurrence, Local - veterinary
Rectal Diseases - veterinary
Scientific
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Summary:A perineal fluid-filled structure was discovered in a 6-year-old intact female Irish water spaniel suffering from intermittent constipation. Diagnostic tests revealed the structure was immediately caudal to the vagina and compatible with a cyst. Surgical excision was required for resolution of clinical signs. Histology confirmed the structure was a cyst. The exact origin is unknown; however, the variety of lining epithelia, including sections with mucin production, and a well-differentiated smooth muscle layer, were most consistent with development from the lower hindgut or urogenital sinus during embryonic growth. The histologic and anatomical similarities with human retrorectal cystic hamartomas were key in establishing the diagnosis of a perineal cystic hamartoma. Following removal, constipation resolved, and the cyst did not recur.
ISSN:0008-5286